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import { supabase } from "@/integrations/supabase/client";
import { Database } from "@/integrations/supabase/types";
import { ContentItem, Category } from "@/lib/types";

// Type for Urdf table row
type UrdfRow = Database["public"]["Tables"]["urdf"]["Row"];

// Convert a Supabase URDF row to our ContentItem format
export const mapUrdfToContentItem = (urdf: UrdfRow): ContentItem => {
  // Convert tags to categories
  const categories = urdf.tags || [];

  return {
    id: urdf.id,
    title: urdf.name,
    imageUrl: urdf.image_uri || "/placeholder.svg", // This now contains the storage path or full URL
    description: urdf.summary || undefined,
    categories,
    urdfPath: urdf.urdf_uri || "",
  };
};

// Get all URDFs
export const getUrdfs = async (): Promise<ContentItem[]> => {
  console.log("Fetching URDFs");
  const { data, error } = await supabase.from("urdf").select("*").order("name");
  console.log("URDFs fetched", data);

  if (error) {
    console.error("Error fetching URDFs:", error);
    throw error;
  }

  return (data || []).map(mapUrdfToContentItem);
};

// Get unique categories from all URDFs
export const getCategories = async (): Promise<Category[]> => {
  const { data, error } = await supabase.from("urdf").select("tags");

  if (error) {
    console.error("Error fetching categories:", error);
    throw error;
  }

  // Extract all unique tags across all URDFs
  const allTags = new Set<string>();
  data.forEach((urdf) => {
    if (urdf.tags && Array.isArray(urdf.tags)) {
      urdf.tags.forEach((tag) => allTags.add(tag));
    }
  });

  // Convert to Category objects
  return Array.from(allTags).map((tag) => ({
    id: tag,
    name: tag.charAt(0).toUpperCase() + tag.slice(1), // Capitalize first letter
  }));
};

// Get URDF by ID
export const getUrdfById = async (id: string): Promise<ContentItem | null> => {
  const { data, error } = await supabase
    .from("urdf")
    .select("*")
    .eq("id", id)
    .single();

  if (error) {
    if (error.code === "PGRST116") {
      // Row not found
      return null;
    }
    console.error("Error fetching URDF by ID:", error);
    throw error;
  }

  return mapUrdfToContentItem(data);
};

// Get public URL for image
export const getImageUrl = async (path: string): Promise<string> => {
  if (!path || path.startsWith('http') || path.startsWith('data:')) {
    return path || '/placeholder.svg';
  }

  try {
    // Get public URL for the image
    const { data, error } = await supabase.storage
      .from('urdf-images')
      .createSignedUrl(path, 3600); // 1 hour expiry
      
    if (data && !error) {
      return data.signedUrl;
    }
  } catch (error) {
    console.error(`Error fetching image at ${path}:`, error);
  }
  
  return '/placeholder.svg';
};